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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças; Embrapa Meio Ambiente. |
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Data corrente: |
17/08/2004 |
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Data da última atualização: |
17/08/2004 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BETTIOL, W.; GHINI, R.; GALVÃO, J. A. H; SILOTO, R. C. |
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Título: |
Organic and conventional tomato cropping systems. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 61, n. 3, p. 253-259, May/Jun. 2004. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Several alternative agricultural systems have been developed, and among them, organic agriculture has deserved attention, with increased interest on the part of growers. The objective of this paper was to provide a comparison between the organic and the conventional tomato cropping systems for varieties Débora and Santa Clara, by means of an interdisciplinary study. The experiment was set up as randomized blocks with six replicates, in a dystrophic Ultisol, and plots measuring 25 x 17 m. All procedures utilized were according to the local conventional and organic growers. Fertilization in the organic system employed organic compost, single superphosphate, dolomitic limes (5L, 60 g, and 60 g/pit), and sprayed twice a week with biofertilizer. Fertilization in the conventional system employed 200 g 4-14-8 (NPK)/pit and, after planting, 30 g N, 33 g K and 10.5 g P/pit; 52 days after planting, plants were sprayed once a week with foliar fertilizer. In a conventional system, a blend of insecticides, fungicides and miticides was sprayed twice a week, after planting. In organic system extracts of black pepper, garlic, and Eucalyptus; Bordeaux mixture, and biofertilizer were applied twice a week to control diseases and pests. Tomato spotted wilt was the most important disease in the organic system, resulting in smaller plant development, number of flower clusters and yield. In the conventional system, the disease was kept under control, and the population of thrips, the virus vector, occurred at lower levels than in the organic system. Variety Santa Clara showed a greater incidence of the virus disease, and for this reason had a poorer performance than ?Débora?, especially in the organic system. Occurrence of Liriomyza spp. was significantly smaller in the organic system, possibly due to the greater frequency of Chrysoperla. The conventional system showed a smaller incidence of leaf spots caused by Septoria lycopersici and Xanthomonas vesicatoria; however, early blight and fruit rot caused by Alternaria solani occurred in larger numbers. No differences were observed with regard to the communities of fungi and bacteria in the phylloplane, and as to the occurrence of weeds. MenosSeveral alternative agricultural systems have been developed, and among them, organic agriculture has deserved attention, with increased interest on the part of growers. The objective of this paper was to provide a comparison between the organic and the conventional tomato cropping systems for varieties Débora and Santa Clara, by means of an interdisciplinary study. The experiment was set up as randomized blocks with six replicates, in a dystrophic Ultisol, and plots measuring 25 x 17 m. All procedures utilized were according to the local conventional and organic growers. Fertilization in the organic system employed organic compost, single superphosphate, dolomitic limes (5L, 60 g, and 60 g/pit), and sprayed twice a week with biofertilizer. Fertilization in the conventional system employed 200 g 4-14-8 (NPK)/pit and, after planting, 30 g N, 33 g K and 10.5 g P/pit; 52 days after planting, plants were sprayed once a week with foliar fertilizer. In a conventional system, a blend of insecticides, fungicides and miticides was sprayed twice a week, after planting. In organic system extracts of black pepper, garlic, and Eucalyptus; Bordeaux mixture, and biofertilizer were applied twice a week to control diseases and pests. Tomato spotted wilt was the most important disease in the organic system, resulting in smaller plant development, number of flower clusters and yield. In the conventional system, the disease was kept under control, and the population of thrips, the virus vector,... Mostrar Tudo |
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Palavras-Chave: |
Cultivar Debora; Cultivar Santa Clara; Cultivo Orgânico. |
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Thesagro: |
Agricultura; Agricultura Orgânica; Biofertilizante; Controle Biológico; Controle Integrado; Controle Químico; Doença de Planta; Fertilizante; Lycopersicon Esculentum; Praga de Planta; Pratica Cultural; Produtividade; Tomate. |
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Categoria do assunto: |
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Marc: |
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Registro original: |
Embrapa Hortaliças (CNPH) |
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